Okay, so listen. I know you're anxious, but you've asked a lot of questions about what is and isn't a risk.
1) Here are some posts from our experts (when we had them) that may help -
- read this thread thoroughly. There is an excellent explanation about why certain activities are not risks, and why others are.
2) See the last post above, but licking breasts is not a risk if she was not lactating, which you do not mention and you would have absolutely noticed if she was. She would also not let you take her baby's food.
3) This is a good sign, though it doesn't matter because you didn't do anything that would put you at risk.
4) No STD causes an upset stomach or a quick headache, no matter how bad it is.
So rest assured that you had no risk, that handjobs, fingering, touching doesn't transmit STDs. Licking breasts doesn't either.
So to summarize, you need to have mouth to genital, mouth to anal, genital to genital or genital to anal contact in order to transmit an STD. You had none of these things.