Advice needed

Ok so I got this friend who was living in a small town with her girlfriend. Neither could find jobs there. I felt bad and agreed to let them come stay. Ugh. Dumb I know but I have big heart. Anyway I drove 2 hours to pick them up. All I got was $5 for gas. The toll booths there cost $7. So been driving them everywhere to job search and go to store etc.... I had to ask for gas money and they give me $3. I drive a v8 truck. $3 lol doesn't do much. They keep saying they're broke HOWEVER, went and bought shoes, cigarettes and paid for a taxi. I was struggling to pay rent this month and they knew it. But can't volunteer to pitch in. My friends girlfriends mom sent her money.

I text my friend from work other day and tell her I will need half the rent money for September to not worry about half utilities till October. She replies that should work I will talk to girlfriend about it. So kind of made me mad like it's their decision. So I responded I hope so cause I can't budge! All I asked for was $245 for September.

Ok well they went walking tonight and I noticed earlier when they ate supper in their room the plates were never brought to kitchen. So why they were gone I opened bedroom door and turned in light. Omg!!!!! Dirty plates and cups, dirty clothes everywhere and powder all over the floor!!! I feel disrespected because they show no appreciation of myself nor my house. I've had to do all the dishes since they have been here. They left a mess in bottom of my brand new oven and left food on foil in oven.

How should I go about getting them out??? I just found out I'm pregnant and they are stressing me out more than anything. My phone gets turned off at midnight tonight because I had to give up my whole check for rent yet they are blowing money on shoes and crap yet claiming to be broke. Please help. I'm considering saying my landlord called because he heard from his aunt that lives next door that they were staying here also and they aren't on lease so they have to be gone in 2 weeks. They both got jobs this week and plenty of low income apartments around