I need some advice!

I don't want to take a test yet, I'm too scared it'll be negative so I'm looking for advice first. I've been taking metformin for about 8 months and 3 months ago I finally started having a regular cycle, I had bloodwork done at the end of march and my hormones are finally within the normal range. The first month i had a regular cycle, in February, it was super heavy horrible, horrible cramps, i felt super sick. In march it was quite light with some cramps but still enough for me to know it was my period but this month was completely different. I always have spotting before my period so i started spotting april 5th to 8th it was light but a little more later in the day then it stopped and started again which was enought for me to put a liner on but it was only in the morning and went away after which was a little weird but my period was supposed to start on april 10th so i didn't think much of it well fast forward to today and i still havent had my period but yesterday had a tiny bit of spotting just in the morning. I've still bit having some cramps off and on but I'mjust not sure if i should still wait for my period or if maybe i could be pregnant. A little tmi there was not clots but like little bits? If that makes sense like the lining of your uterus type thing. The spotting is like a dark brown. I used to have off and on spotting like this before i started metformin but now my hormones are normal so idk. Any advice would be much appreciated.