Please help me 😔 so scared

Megan
Long story
The last time I had protected sex was the beginning of October. I'm on the pill, we used a condom and he pulled out
I got my withdrawal bleed that month, and the next month, but the weird thing was I had mid cycle bleeding both months around mid pill pack. I also got awful headaches and cramps before my withdrawal bleeds
Since then I stopped having sex because I kept getting pregnancy scares. My last withdrawal bleed kinda ended funny? It ended in light red blood and not brown discharge like usual.
Anyway...
This month has sucked.
I'm so dry down there, if I do have discharge it's either a slight bit of egg white discharge and sometimes it's tinged pink. I haven't had mid cycle bleeding, I've been so nauseous and the worst is probably my breast pain 😭I'm so paranoid I could be pregnant but my boyfriend thinks I'm worried about nothing. I'm so scared. Idk if it's just a change to my cycle or what. 
This is my fifth month on a low dose desogen combined pill
Can anyone help😥

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