I need advice please

So my period is six days late. I’ve been having what I thought were cramps the past few days but as of last night they turned into sharp pains every so often off and on. I haven’t been feeling very well and my boobs are kinda sore. I’m a little worried about the sharp pains. I plan on taking a test on Monday morning if my period still isn’t here. Did anyone experience a very early on miscarriage or something that went wrong and what were your symptoms? I ask because I have a ton of scar tissue on my tubes and am worried if I am pregnant something might be wrong. I know the simple thing to do would be to see my doctor but financially I can’t do that this week so I figured I would ask for advice. I attached my calendar for reference. Thank you for your help 😊