So I get very anxious about illness and pregnancy in general so I'm going to try and make this as brief as possible. On Nov18th 2017 (very early sunday morning) I had unprotected sex with a guy I'm now seeing. He didn't *** inside of me but we had sex more than once so there will have been *** on his penis. I'm on the pill but it was in my first two days of a new packet and I took the first one late so I panicked and took the morning after pill on the Monday morning. Then a week and a bit later started getting nausea and feeling a bit off (which I've had before when I've taken MAP) then I got bleeding, some red/some brown for about two weeks until I had what i think was my period. Although usually I don't ever get my period so this was odd. Then I noticed this dull aching in my groin area which has been there ever since then till now and has only gone away when I had my period last week (which was just one day of red blood and super light) I have also had swollen breast which have grown massively and I'm very bloated and feel constantly tired and have back pain. I've done 5 pregnancy tests since Nov and all say negative but I'm worried they're false negatives. I've also had STI tests in Aug and Dec which came back all clear.
Can anyone help me? :( I am a bit of a hypochondriac and get myself wound up over things like this. Any help would be much appreciated.