Am i?

I’m eighteen. I just recently broke up with my boyfriend. I"m on the depo shot first of all but i’ve heard of many poeple getting pregnant on it. My e told my parents that i thought i was pregnant and they wont even talk to me about it they just wisper to each other. They’ve told me they want to know how much i’m eating and thats it.
But the symptoms i’m having are breast tenderness, weight gain in my butt and stomach, my breasts are swollen, i’m constantly hungry, and i dont know if i have morning sickness. I mean i don’t vomit but i do get a stomach ache, kind of like i’ve eatn too much candy and u get a stomach ache and i cant eat when i’m like that. I can’t say if ive missed my period because the depo shot stops it so i ccant go by that. But also breast tenderness and weight gain are symptoms from using the depo shot. So i dont know. All my ex says is to just let him know. but my family wont do anything. I dont have my licence so i cant just go buy a test or sumthing.