Possibly Pregnant? - Complicated Situation

[lizzycakes]

Alright, I have a relatively awkward situation.
April 12th and May 10th periods came as normal, then a funky one again in May, and a really lite one starting June 6th, ending on June 8th.
During early May, I had untimely unprotected sex, and took a Plan B. I had a period right after that, which I was used to, and had some unprotected sex with my boyfriend during that time. June 6th i started a 2 day very lite period. On June 9th, I took a pregnancy test and it was negative.
Since then I've been noticing weird signs, but then also wondering if I'm just subconsciously hoping I end up pregnant. I know that early pregnancy and PMS signs can be the same, but more and more lately I've sorta had a weird creeping feeling that I am.

I apologize for sorta double posting, but my first post was pretty vague.
I understand Plan B has a relatively high failure rate, and unprotected sex *any* time could result in pregnancy, and also that only 25% of women experience implantation bleeding. Currently I've been having strange abdominal tingling or tightening, and sharpish pains to the sides of my abdomen, as well as intestinal issues, tender nipples since a little before my period in June. I keep trying to tell myself that it's just PMS pains and signs, but doing things I find myself thinking that I am just out of no where.

Someone recommended that I test again on the 19th, but I don't know if I should just wait it out until my possibly next period, which I don't know when it will be now, since it got messed up last month. Or if I should test now again. If it's negative now, does that mean that my period has just gone really crazy?

Sorry for all of my questions, but I don't really have anyone to actually talk to about this. Thanks in advance for your time.

[lizzycakes]

I don't mean do inadvertently bump this post, but I thought I'd add that also during June 6th-8th I (stupidly) had more unprotected sex

[BTMshop73]

I don't really have any answers to your post, but the best way to make sure you are or are not pregnant would be a HCG blood test.  I want to say HCG starts to produce after implantation.  Anything above a 5 would be pregnant.  Also the cheap $1 test from the dollar tree or dollar store are supposed to detect 25 HCG(found out 1 day before my period).