Confused

I had a miscarriage early this year February worst experience ever I am a mother of a 2 year old girl already but was trying with my boyfriend after the miscarriage haven’t gotten pregnant yet & I tend to get excited every month thinking it’s going to happen for us again So I get confused on symptoms & the difference between pregnancy & period I mainly look for the dark line on my stomach because that’s what I noticed first before I had the miscarriage I’m February so I’m not sure if me not having a dark enough line could I still be pregnant? Ok so I had unprotected sex on the 6th of this month the 10th the 11th That morning the 17th the 18th That morning & the 22nd I spotted on the 20th of this month also I Jus started seeing white discharge I have two different apps on my phone for my period & one one my fertility window was open from the 8th to the 8th I came on my period July the 1st last month putting in my information on <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">EVE</a> says I’m 1 day late for my period my breast feel a tad bit heavy nipples sensitive If I touch them I’m confused and need advice