chances of getting pregnant

so my boyfriend is coming to visit me on February 9-11 (its long distance so we hardly see each other so this means a lot) and we want to have sex the night of the 9th. I start my period on the 11th according to the glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a>. I would like to know how likely my chances of getting pregnant are, glow says it’s 3% but i was wondering if it’s more since my egg is literally sitting there awaiting if it’s going to get a sperm or drown in blood again this month. anything helps except for rude or judge mental comments. thank you!! btw we are only using pull-out as the “method” and he is very in tune with his body and we both trust that he will know when to do it with plenty of time left to prevent a scare.