Hi, I have heard of women getting pregnant after a tubal especially after many years. My friend had a tubal and 13 years later got pregnant again because the tubes can regenerate themselves.
I did however feel pregnant last year and freaked out, I also had a tubal a few years back, I missed my period for 2 months with constant feeling of being prego and after numerous pregnancy tests that were all negative I took an appt with my doc and found out it was an ovarian problem that was causing my hormones to mess up my whole system. Now I'm on natural hormone therapy and getting back to normal but its a long battle with many ups and downs physically and mentally.
I would take a PG test and if its neg and you're still feeling prego go see your doc. They can do a blood test that is 100% accurate to tell you whether or not you're pregnant and if you aren't they will be able to asses the problem and see if theres another issue that could be causing the problems you're having.
I never knew how powerful our hormones were until I started having an imbalance, it can really mess with your body and mind.
Anyways, I hope this helps