Chances of being pregnant by precum? 5 months ago had unprotected sex but had normal periods until 2 months ago when they stopped. Took 2 hpt both neg

Precum fluid. There can be active sperm in a males precum emission. It doesn't sound as if your pregnant so your probably have an irregular cycle. I suggest that you use protection, because you may ovulate in the future.
Not likely. If this is all that you did and you have negative tests, you are likely not pregnant. You had intercourse 5 mos ago without protection, and had periods up to 2 mos ago. So you are unlikely pregnent from this. Having said this, if you've had intercourse 2 mos ago and no periods, you could have pregnancy or issues, like an ectopic pregnancy, or another cause for no periods, so see your doctor.