What's going on!?!?!

Am

So I have the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> and the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Period Tracker</a> app~According to Glow, I am 7 dpo...But according to PT, I'm only 5 dpo...Idk which one to go by~PT is always more accurate with my period than Glow...Anyway, today I've started to have period like cramps and lower back pain and some light spotting with specks of red in it. I want it to be implantation bleeding So badly!!! I miscarried March 30th and had my first period I believe on May 4th~It was really heavy...I'm wondering if I'm starting my period and my body is just trying to get back to normal?! This is so stressful😫😫 My hcg levels were still at 4 last Wednesday~